diff --git a/src/wormhole_transit_relay/test/common.py b/src/wormhole_transit_relay/test/common.py
index 86029b3..70cfed2 100644
--- a/src/wormhole_transit_relay/test/common.py
+++ b/src/wormhole_transit_relay/test/common.py
@@ -1,13 +1,10 @@
-from twisted.test import proto_helpers
 from twisted.internet.protocol import (
-    ServerFactory,
     ClientFactory,
     Protocol,
 )
 from twisted.test import iosim
 from ..transit_server import (
     Transit,
-    TransitConnection,
 )